The Kinetics of Semi-Coke CO 2 Gasification Based on Pore Fractal Growth

Junzhe Wang, Anning Zhou (), Zongxing Song, Guoyang Liu, Sicheng Qin and Jing Wang
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Junzhe Wang: College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Anning Zhou: College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Zongxing Song: College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Guoyang Liu: College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Sicheng Qin: Shaanxi Coal Industry New Energy Technology Co., Ltd., Xi’an 710054, China
Jing Wang: Shaanxi Coal Industry New Energy Technology Co., Ltd., Xi’an 710054, China

Energies, 2024, vol. 17, issue 2, 1-15

Abstract: The gasification kinetics of semi-coke are an important research topic in the gasification process of semi-coke. The evolution of the pore structure is one of the most important factors affecting the gasification rate of semi-coke. In this paper, the pore fractal growth model was established based on the principle of pore fractal growth and the Sierpinski sponge structure. Three kinds of semi-coke raw materials were used to prepare porous carbon with different degrees of gasification. Combined with the TG curves of raw materials, the gasification kinetics based on the fractal model were verified. The curves of the gasification reaction rate and the specific surface area as a function of carbon conversion were consistent with the random pore model and experimental data, which verified the feasibility of the model. The pore fractal dynamic model could predict the change in the pore structure with carbon conversion during semi-coke gasification, so as to reveal the kinetic law of carbon gasification.

Keywords: pore fractal growth; specific surface area; kinetics; porous carbon; carbon conversion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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